In this video, I'll be showing you how to fix Gemini 3's laziness and hallucination issues using a custom system prompt called "KingMode." I demonstrate this in Verdant, transforming Gemini from a junior coder into a Senior Frontend Architect that handles complex backend logic perfectly and sticks strictly to your installed libraries.

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Resources:

Prompt: https://github.com/aicodeking/yt-tutorial
Verdent: https://verdent.ai/

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Key Takeaways:

🚀 Gemini 3 is fast and cheap but often suffers from laziness and "junior" mistakes in production.
👑 The "KingMode" system prompt forces the model to adopt the persona of a perfectionist Senior Architect.
🧠 A secret "Ultrathink" trigger suspends the rush to code, forcing deep analysis for complex backend logic.
🎨 The prompt enforces "Intentional Minimalism" and strict adherence to UI libraries like Shadcn and Tailwind.
🛠️ Demonstrated in Verdant, this method prevents the model from reinventing wheels or writing unscalable code.
⚡ "Ultrathink" mode optimizes performance, suggesting advanced solutions like Web Workers and O(1) state lookups.
📈 This free upgrade makes Gemini 3's reasoning feel much closer to premium models like Claude 3.5 Opus.

Gemini 3 PRO ULTRA MODE (KingMode Prompt): This SIMPLE TRICK MAKES Gemini 3 PRO - A BEAST!